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Anonymous

Re: 2001silverado/5.3 keeps shredding the front rib...

I don't like Dayco, but that is not the issueMost likely the crankshaft damper will have to bereplaced. You can't see the misalignment but it is thereDon't know who they is-- but I want to know and get theparts I want,so I assume you don't work on vehicles.

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Well there's only part that has to do with the cooling system and serp belt - the water pump!! Maybe it's starting to seize or has too much play. Either way, when you change the water pump, replace the thermostat and flush the system very thoroughly, those 98-99's are notorious for rust build up. Make sure to pull the heater hoses off and flush the heater core too. After all said is done, purge the coolant and make sure there is heat from the blower. If not you're going to have to replace the heater core because that gets clogged sometimes when flushing.

Did you replace the belt? You mentioned the pulleys, but not the belt. If the belt is new, check the grooves on the pulley that appears to be a problem and make sure there is no residue stuck in the grooves. Also, make sure you can't wiggle the pulley that is giving the problem. It is possible for a belt to cause some damage when it comes apart.

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I would look online for a diagram on how the belt is to be run around the pulleys to make sure you are running it correctly , let me asked you this is this what it did to the original belt if not it is not run correctly over the pulleys ?

There are only 4 things that will cause a belt to squeal.
1. A bad/worn-out belt
2. A bad or misaligned pully or pulley bearing
3. A bad belt tensioner. (pulley, arm, pivot, or spring)
4. Malfunctioning or bad component (alternator, power steering pump, A/C compressor, etc.)

Remove the belt and check ALL pullies to make sure that they rotate smoothly and do not have any horizontal play in them (indicating worn-out bearings). Make sure that the tensioner pully swings freely and does not bind in its travel at any point and that it is properly aligned with the other pullies. A good way to check for proper alignment is to look at the belt position on the pullies with the engine running. If the belt is running on the edge of the pullies instead of in the center, it is usually caused by a bad belt tensioner or a bad bearing on one of the other pullies.

Either the belt is over-tightened or there's a chip/nick on one of the flywheels. Check the pullies that the belt passes over. If there's a nick use a fine file to smooth it out. Also, make sure the pullies line up so belt runs straight. The belt needs to sit in the concave.

the universal rule for serpentine belts is, ribbed pully is front side of the belt and shiny pully is back side of the belt, there should also be a one tensioner pully that is either spring loaded or tighten by a screw.

If you are talking the a/c pulley and alternator pulley, I am pretty sure the belts are different sizes (different number of ribs in the belt). So, you can just look carefully at the ribs and put the right belt on the right pully. from memory, the A/C belt goes on first and all the pullies towards the front of the car are used for that belt. The Alternator belt goes on next, and all the pullies from the crank shaft toward the back of the car (from the crank pulley) go to that. I could have those reversed, but the ribs on the belt will show you for sure. have fun!

That bolt keeps the belt tensioner on. There are two bolts on a typcial tensioner. One to keep the pully on, the other to keep the whole asembly on. Since it's a GM, you should either see a square hole, around 3/8 in or a raised slot. You can put a 3/8 braker bar in the hole and you push it to remove the tension. No need to remove any bolts. Or, there could be a slot sticking out on it, you can put a wrench on it and push it to remove tension. When there is no tension, you slip off the belt from any pully, i prefeer slipping it off a top pully for easier access, and same for instaliton. Set the new bet up the way your old one was exepct for the highest pulley, remove the tension from tensioner, slip belt back on last pully and let the tensioner do it's job. If you remove the bolt that keeps the tensioner on, it will pop off and easily hurt yourself. After the new belt is on, make sure it is on correctly. There are small ribs on the inside of the belt, if those aren't in the groves properly of all the pullies, the belt will not last as long.